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SUNIX USB2312 is a dual-port Super-Speed USB3.1 PCI Express Add-on card, and its compliant with the PCI Express Generation 2 (Dual-lane x2) specification for host PC system. It works up to 10 Gbps for data transfer when connecting to USB 3.1 compliant peripherals, while maintaining compatibility with existing USB peripheral devices. USB3.1 performance is 2 times faster than USB3.0 and 20 times faster than USB2.0 connectivity. With SUNIX unique technology, it can output efficient power to USB device without additional power adapter connection. SUNIX USB2312 is an ideal choice for external storage devices, MP3 players, external writer, digital cameras, webcam, networking and video devices, and all other USB devices.


  • PCI Express Base Specification Revision 2.0 dual-lane (x2).
  • Compliant with Universal Serial Bus 3.1 specification Gen2.
  • Compliant with xHCI (eXtensible Host Controller Interface) specifications Revision 1.1.
  • Supports simultaneous operation of multiple USB 3.1, 3.0, USB 2.0 and USB 1.1 devices.
  • Supports USB data transfer rate of 10G/5G/480/12/1.5 Mbps.
  • Expands dual external USB3.1 Super-Speed plus Type-A ports on the system.
  • USB port supplies maximum +5VDC / 900mA power output to USB device.
  • Built-in over current protection on each USB port.
  • Support device remote wakeup function from USB keyboard or mouse.
  • Hot-swapping feature allows connect/disconnect device without powering down the system.
  • Driver supports for Microsoft Windows 7, 8.x and 10 operation systems.
  • Certified by Electromagnetic Compatibility (CE, FCC, VCCI, C-Tick, BSMI) and RoHS approval.



BUS PCI Express Spec 2.0, Dual-Lane (x2)
Controller PCI Express USB3.1 Host controller, Asmedia ASM1142
USB Standard eXtensible Host Controller Interface (xHCI)Rev1.1
IRQ & IO Assigned by System

USB Communication

Interface Universal Serial Bus 3.1 / 3.0 / 2.0 / 1.1
Speed Super Speed+ (10Gpbs), Super Speed (5Gpbs), High Speed (480Mbps), Full Speed (12Mbps), Low Speed (1.5Mbps)
No. of Port 2-port
PCB Connector USB3.1 USB Type-A port
Protection 15KV IEC61000-4-2 Air Gap Discharge
8KV IEC61000-4-2 Contact Discharge


Source PCIe Bus Power
Output Capacity USB Type-A Port:
+5VDC / Maximum 0.9A / each port
Note: Total power output capacity will be limited by system power supply.
Over Current Protection USB Type-A Port:
+6VDC / 1.1A / each port / PTC Fuse
Power Consumption 1.1 W @ 3.3V (board only without power output to USB device)

Driver Support

Windows Windows 7 (X86/X64)
Windows 8.x / 10 (X86/X64) (Windows in-box driver)
Linux Linux 2.6.31 or later (Linux OS already implemented USB3.0 driver)


Operation Temperature 0 to 60C (32 to 140F)
Operation Humidity 5 to 95% RH
Storage Temperature -20 to 70C (-4 to 158F)

Regulatory Approvals

EMC EUR: CE, EN55022 Class B, EN55024, EN61000-3-2, EN61000-3-3
US: FCC Part 15 Class B

Physical Characteristics

PCB Dimension 79.3 x 68.5 mm
Bracket Standard 120 mm (Low Profile 80mm)
Bracket Space 1


No additional files, specification sheets, guides or documentation found for product.

Warranty: 12 Month Return To Base

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